Merge pull request #206 from sesuncedu/simple_fss_speedups

Simple fss speedups
Fix tokenizing - all existing unit tests now pass.

Add line and column number tracking.
Change buffering strategy for file document source - buffer reader, not input stream
Merge branch 'require_java_7' into custom_tokes
Merge branch 'change_buffering_of_file_doc_source' into custom_tokes
Add timing for user_token_manager with position tracking.
Ignore GO Test  - should remove, or add file to repo